absolute: in absolute space, need to use absolute.segment

We can be in absolute space and still end up with segment-relative
references.  This is in fact the meaning of absolute.segment.  Make
sure we define the labels appropriately.

Reported-by: Cyrill Gorcunov <gorcunov@gmail.com>
Signed-off-by: H. Peter Anvin (Intel) <hpa@zytor.com>

asm/directiv.c

@@ -399,6 +399,7 @@ bool process_directives(char *directive)
                        "in pass two");
         in_absolute = true;
         location.segment = NO_SEG;
+        location.offset = absolute.offset;
         break;
     }
 

asm/parser.c

@@ -486,7 +486,8 @@ restart_parse:
              * Generally fix things. I think this is right as it is, but
              * am still not certain.
              */
-            define_label(result->label, location.segment,
+            define_label(result->label,
+                         in_absolute ? absolute.segment : location.segment,
                          location.offset, true);
         }
     }